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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
Holstein Cow
sertoli cells
vagina
feeding a high producing dairy cow
2. Duct through penis that carries sperm and urine
spermatogenesis
Dairy Cattle Gestation
urethra
functions of progestrone
3. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
Sperm growth rate
burdizzo
ewe estrus cycle
behavioral signs of estrus
4. (LH) causes female's egg to break (her period)
Lutinizing Hormone in females
Sperm growth rate
Follical Stimulating in females
polyestrous
5. Male on one pin and female on other side
testis (gonads)
what has to happen for males for copulation to occur
ewe gestation
libido test (BSE)
6. Duct through penis that carries sperm and urine
cow gestation
libido test (BSE)
colostrum
urethra
7. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
oviducts
pelvis
Dairy calves are removed from cow at birth to...
reasons for castration
8. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
Reasons for gestation length being affected
semen evaluation (BSE)
dartos muscle
9. ~60 days before calving
dry-off time in dairy cattle
monestrous
1. more cost effective - 2. powdered milk is in excess production
monorchid
10. Milk is 15% ________ and 85% __________.
dry matter and water
ewe ovulation
mare gestation
functions of progestrone
11. Animals which have only one estrous cycle (ex: dog - fox)
kidney stones also called ________ ___________ can develop in the sigmoid flexure
prostaglandin
monestrous
Mares
12. Look for infection - split - and rupture of the penis
cryptorchid
penis and prepuce observation (BSE)
Culls bulls earlier (2 reasons)
mare gestation
13. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
hormones
what has to happen for males for copulation to occur
effects of estrogen
sigmoid flexure
14. 114 days
effects of estrogen
epididymis: definition - 3 parts - 4 functions
6-8 weeks
sow gestation
15. When are dairy cattle dehorned?
behavioral signs of estrus
~1 month
functions of progestrone
polyestrous
16. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
organs used in spermatogenesis
penis proper
mare estrus cycle
seasonally polyestrous
17. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
Reasons for gestation length being affected
penis sizes vs delivering methods
burdizzo
Size of cow in relation to the amount of milk produced
18. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
elastrator
seminiferous tubules
visual evaluation (BSE)
epididymis: definition - 3 parts - 4 functions
19. What helps regulate spermatogenesis?
testosterone
cervix
colostrum
cremaster muscle
20. Luteolysis happens because of the ____________ hormone
ewe ovulation
prostaglandin
Dairy Cattle milking schedule
mastitis
21. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
dry matter and water
ewe ovulation
accessory sex glands
why does the cow need fat deposits during pregnancy?
22. Animals which have only one estrous cycle (ex: dog - fox)
stag
Dairy Cattle milking schedule
monestrous
functions of progestrone
23. Animal which has been castrated after puberty
Follical Stimulating in males
prostaglandin
stag
dry-off time in dairy cattle
24. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
penis proper
colostrum
1. more cost effective - 2. powdered milk is in excess production
Dairy calves are removed from cow at birth to...
25. Urinary calculi.
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Avg. bull specs
cow ovulation
Grading choice
26. 265-285 days
1. more cost effective - 2. powdered milk is in excess production
Dairy Cattle Gestation
cow estrus cycle
ewe gestation
27. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
eminal vesicles
Sperm survival specs
things to check for in a breeding soundness exam (BSE)
monorchid
28. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
eminal vesicles
monestrous
penis and prepuce observation (BSE)
1. more cost effective - 2. powdered milk is in excess production
29. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
accessory sex glands
scrotal circumference (BSE)
epididymis: definition - 3 parts - 4 functions
ewe estrus cycle
30. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
mare ovulation
prostaglandin
oviducts
functions of progestrone
31. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
Culls bulls earlier (2 reasons)
testosterone
sow ovulation
Dairy Cattle Gestation
32. Animals which have many estrous periods per year (ex: cow - sow)
normal presentation of the fetus
polyestrous
mare estrus
mare gestation
33. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
reason for seasonal breeding periods
dry-off time in dairy cattle
colostrum
humans: stress level vs sperm
34. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
polyestrous
Dairy Cattle milking schedule
scrotum
35. 14-19 (17) days
ewe estrus cycle
femininity of a heifer
Follical Stimulating in females
stag
36. 14-19 (17) days
ewe estrus cycle
Dairy Cattle milking schedule
organs used in spermatogenesis
effects of BST
37. When are steers and heifers weaned from bottle feeding?
Follical Stimulating in females
6-8 weeks
vagina
cowper's gland
38. Days which have decreasing daylight hours
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39. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
Sperm survival specs
Culls bulls earlier (2 reasons)
cow estrus cycle
age and castration
40. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
vulva
dry-off time in dairy cattle
visual evaluation (BSE)
effects of estrogen
41. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
scrotal circumference (BSE)
testis (gonads)
semen evaluation (BSE)
Sperm survival specs
42. The more stressed out the male is - the less sperm he is going to produce
1. more cost effective - 2. powdered milk is in excess production
semen evaluation (BSE)
humans: stress level vs sperm
sow ovulation
43. ~305 days (altough often longer due to breeding difficulties)
cow estrus cycle
Dairy Cattle Lactation (standard)
ewe estrus
dairy cattle pregnancy check
44. 1-2 days
hormones
ewe estrus
semen evaluation (BSE)
estrous
45. The more stressed out the male is - the less sperm he is going to produce
colostrum
humans: stress level vs sperm
ewe ovulation
rectal palpation (BSE)
46. Sperm production
semen evaluation (BSE)
seasonally polyestrous
spermatogenesis
ewe estrus
47. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
estrous
4 major reasons for culling dairy cows
dry matter and water
urethra
48. 24 hours before end of estrus cycle
behavioral signs of estrus
mare ovulation
mare estrus cycle
pelvis
49. Why does estrus happen before ovulation?
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
things to check for in a breeding soundness exam (BSE)
cow ovulation
Follical Stimulating in males
50. 24 hours before end of estrus cycle
Holstein Cow
mare ovulation
Grading choice
retractor muscles